Sure, I know the video is not suitable for digital, but the problem occurs just  because I set the trigger mode *before* I change the input channel. This should not happen. In my case the source does not change by itself when I rotate the wheel, it stays at D0. It is interesting that you see your input source changing automatically.<br>
I can reproduce the problem systematically, it always hangs. <br>
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It is interesting that this is fixed on MDO3104. It might seem something related to firmware, but apparently it is not.<br>
Thanks for your comments.<br>